F 550 2WD Super Duty V10-6.8L (2009)
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Is the resistance less than 5 ohms?
Yes
If the vehicle is equipped with a DSM, GO to V14.
If the vehicle is not equipped with a DSM, GO to V15.
No
CONNECT all modules. CONNECT the negative battery cable. GO to V33.
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V14 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE DSM DISCONNECTED
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Disconnect: DSM C341b.
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Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness
side.
-
Is the resistance less than 5 ohms?
Yes
GO to V15.
No
CONNECT all modules. CONNECT the negative battery cable. GO to V34.
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V15 CHECK THE MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH THE ACM DISCONNECTED
-
Disconnect: ACM C240c.
-
Measure the resistance between the DLC C251-3, circuit VDB06 (GY/OG), harness side and the DLC C251-11, circuit VDB07 (VT/OG), harness
side.
-
Is the resistance less than 5 ohms?
Yes
If the vehicle is equipped with an APIM, GO to V16.
If the vehicle is not equipped with an APIM, GO to V17.
No
CONNECT all modules. CONNECT the negative battery cable. GO to V35.
